Home / 1,688.24-2,530.20-713.36

Finding the Fourth Proportional to 1,688.24, 2,530.20 and 713.36

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Solution

The fourth proportional to 1,688.24, 2,530.20 and 713.36 is: 1,069.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.24 : 2,530.20 = 713.36 : x
  2. Step 2: Convert to fraction form
    1,688.24/2,530.20 = 713.36/x
  3. Step 3: Cross multiply
    1,688.24x = 2,530.20 × 713.36
  4. Step 4: Simplify right side
    1,688.24x = 1,804,943.47
  5. Step 5: Solve for x
    x = 1,804,943.47/1,688.24
  6. Step 6: Final answer
    x = 1,069.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.